On Mon, 17 Jun 2002, Andrew Morton wrote:
> I rather depends on what is in /tmp/filelist. I assume it's
> something like the output of `find'. And I assume you're
> using ext2 or ext3?
yup: find mail1 mail2 -type f -print0 >/tmp/filelist
ext3.
thanks for the description of the block groups... that all makes more
sense now.
> You'll get best throughput with a single read thread.
what if you have a disk array with lots of spindles? it seems at some
point that you need to give the array or some lower level driver a lot of
i/os to choose from so that it can get better parallelism out of the
hardware.
i see similar slowdowns on a 4-IDE-disk softRAID5+LVM+ext3 setup (SMP
2.4.19-pre7-ac4). not nearly as bad as on the single disk.
-dean
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This archive was generated by hypermail 2b29 : Sun Jun 23 2002 - 22:00:15 EST